from time import sleep
import sys

class SystemStatus():
    def __init__(self):
        pass

    def start_monitor(self):
        pass

    def run(self):
        cnt = 0
        print('In system!')
        while True:
            sleep(4)
            print('Still in system')
            cnt += 1
            if cnt > 4:
                break
        print('Leaving system')